science help?

Question

can u find something newtrally buoyant.try to find five things

Answer 1

The principle of neutral buoyancy is used to simulate the weightless environment of space. Suited astronauts are weighted in the water by support divers so that they experience no buoyant force and no rotational moment about their center of mass. The suits worn in the NBL are down-rated from fully flight-rated EMU suits like those in use on the space shuttle and International Space Station.

The NBL tank itself is 202 ft. in length, 102 ft. wide, and 40 ft. deep, and contains 6.2 million gallons of water.[1]

One downside of using neutral buoyancy to simulate EVA is the presence of drag. Generally, this is overcome by doing tasks slowly in the water, to minimize the effect of drag on the exertion required to complete a task. Another downside is that astronauts are not weightless within the suit, and thus suit sizing is critical.

The other primary method used by NASA to simulate microgravity is the so-called "Vomit Comet", an aircraft which performs a number of parabolic climbs and descents to give its occupants the sensation of zero gravity. The vomit comet reduces the problem of drag in weightless simulation. The main shortcoming of this method is its time limitations - periods of weightlessness are limited to around 25 seconds, interspersed with periods of acceleration of around 2 g's as the aircraft pulls out of its dive and readies for the next run. This is obviously not suitable for practicing EVAs, which usually last several hours.

The Neutral Buoyancy Research Facility at the University of Maryland's Space Systems Laboratory performs research into EVA techniques and robotic interaction using neutral buoyancy as a basis for weightless simulation.

For neutral buoyancy training in the Russian space program, see Yuri Gagarin Cosmonauts Training Center.

http://en.wikipedia.org/wiki/Neutral_Buoyancy_Laboratory

Answer 2

I'm an old fogey, but isn't that something that neither sinks or floats? Would this not depend on the weight and density of the object as well as the density of the fluid in which is was placed? What about forces such as gravity?

Answer 3

Try Physics, not Anthropology. Also, define your terms better and learn how to spell 'neutrally'.

In water.

1. water
2. fish
3. submarine


In air.

4. helium filled weather balloon (it will seek it's buoyancy by rising until it is stable).